Over the past few years, concern for green chemistry and sustainable development has risen dramatically. Researchers make an effort to find solutions difficult challenges using chemical processes. In this study, we use oyster shells as a source prepare calcium oxide nanoparticles (CaO-NPs). Transmission electron microscopy (TEM) results showed CaO-NPs morphology, which was spherical in shape, 4...

This study examines the potential of using calcium-rich precursors to improve strength alkali-activated slag (AAS) cement at low temperature. To achieve this target, effect on early development AAS mortars cured 5°C was assessed. The investigated along with its internal temperature, microstructure and reaction products. It is found that can around 35% group Portland clinker gave highest strengt...

Background: Despite the wide range of applications, there is a serious lack of information on the impact of the nanoparticles on human health and the environment. The present study was done to determine the range of dangerous concentrations of iron oxide nanoparticle and their effects on mouse embryonic stem cells. Methods: Iron oxide nanoparticles with less than 20 nanometers diameter were en...

Attachment assays of a Pseudomonas isolate to fused silica slides showed that treatment with DNaseI significantly inhibited cellular adsorption, which was restored upon DNA treatment. These confirmed the important role extracellular (eDNA) adsorption surface. To investigate eDNA mechanism, single-molecule force spectroscopy (SMFS) used measure silicon surfaces in presence different concentratio...

…………………………............................................................................... ......25 Introduction ………………………………………………..………………………........ .26 Materials and Methods ………………………………………..……………………....... 27 Results and Discussion …………………………………………..…………,……… ......30 Conclusions ……………………………………………………………….….…...… ......34

Homogeneous matrices of calcium oxide (CaO) were prepared by mixing this material with polyethylene glycol (PEG) acting as malleable inert support in order to obtain processable composites. Preliminary tests were carried out to assess the best concentration of CaO in the composite, individuated in the CaO/PEG weight ratio of 1/4. Experimental data highlighted that the composite was able to sele...

This paper introduces two early-stage engineering applications inspired by concretion formation, a naturally occurring elemental and molecular concentration process. First, the precipitation of iron oxide from highly acidic wastewater using cement clinker its to channel control were investigated. Blocking channels precipitating around was confirmed column test. Second, production “Calcium carbo...

We have measured the bulk energy-momentum resolved valence band structure of calcium oxide by the means of electron momentum spectroscopy (EMS). We have extracted the band dispersions, bandwidths and inter-valance gap, electron momentum density (EMD) and density of occupied states (DOS) from the measured data. The experimental results are compared with theoretical band structure calculations pe...

Calcium oxide, available for decades as a root canal filling material, has been little used in recent years due to its lack of radioopacity, and an expectation that it would lead to an excess of root fractures. In this study, four general dentists submitted 79 cases of endodontically treated teeth whose roots were filled with either Biocalex 6/9, or Endocal-10, and rendered adequately radio-opa...

BACKGROUND As part of a project designing nanoparticles for the treatment of Alzheimer's disease, we have synthesized and characterized a small library of nanoparticles binding with high affinity to the β-amyloid peptide and showing features of biocompatibility in vitro, which are important properties for administration in vivo. In this study, we focused on biocompatibility issues, evaluating p...